Repaired the Clown last night. Shaved 4 oz. off the total wt. by replacing the GMS.25 with an OS 25F. Pinned the flap hinges and covered them with some sign vinyl I bought for repairs. Also had a rather large hole in the OB wing, covered it as well. I still need to rebalance, it has 2 oz. on the tail. I am going to put the Cg at 15% of the chord.
I am using a Brodak NVA, an OS.25 venturi. Did have to clearance the case and venturi for the NVA to fit.
Prop wise I'm thinking 9x4 for me and 8x6 for some of the old C/l fliers at my club and my father. When I go with a "fast' prop I usually only put 2 oz. of fuel in the plane. I have also been known to change props while someone keeps the "next" victim busy. I have been told after their flights that the plane didn't look that fast from outside the circle.
Steve